Cylinder lubrication.



J, G. LEYNER.

CYLINDER LUBRICATJON.

APPLIUATION FILED JUNE 14, 190e.

' mentimay 17, ww.

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J. G.. LBYNER. CYLINDER LUBRIGATION.

APPLICATION FILED JUNE 14 Patented May l?, 90

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@IED STA-Third JOI-IN GEORGE LEYNER, OF DENVER, COLRDO, ASSIGNOR TO THE ENGINEERING WORKS COMPANYI'OF LITTLETON, COLOIRDO,

` coronare. f

To all whom fit may concern:

Be it known that I, JOHN GEORGE LEYNER,

i a citizen of the United States of America,

residing in the city and county of Denver and State of Colorado, have invented a new and usefulCylinder Lubrication, of which the following is a specification.

My'invention relates to improvements in they methods and systems in usefor oiling the cylinders and pistons of roel: drilling and all other types of piston engines; and the object of my invention is: to provide a pneumatically o erating oiling system for the cylinders an pistons of all types of en-l gines, and particularly of rock drilling engines. I attain this object by the mechanism illustrated in the accompanying drawings, in which:

Figure l, is a side elevation of the cylinder of an air feed stoping drill, showing the oil reservoir iifdotted. lines, and the opening through which it is filled. Fig. 2, is a vertical, y.longitudinal sectional view through the cylinder, showing the reservoir, and the passagesleading from the same to the interior o f the cylinder. Fig.l 3, is a transverse, sectional view on the line of Fig. 2. Fig. 4, is a similar View on the line @-4 of F 1g. 2. Fig. 5, is a longitudinal, Vertical, sectional View of an operative drilling engine, showing a portion only of the air-feed cylinder and piston. And Fig. 6, is a transverse, vertical sectional View vthrough the cylinder of a screw feed drill, Vshowing the oil cylinder on one side of thc saine.

Referring to the drawings, the numeral 1, designates the cylinder of a rock drilling engine; and 2, designates the hammer piston, which is' reciprocally mounted therein; 3, designates the front cylinder head; and 4, the rear cylinder head.

The drilling engine illustrated in Figs. l to 5 inclusive, is a style `which is adapted to be fed against the rock, by any air operated piston rod 5, which extends out through a cylinder 6, secured to the' rearend of the piston cylinder l, while the engine shown' 1n Fig. 6 is of the ordinary screw feed type,

and is provided with the usual slideways 7,-

which mbve in the guideways of the usual supporting shell, not illustrated, but the particular constructionkof the drilling engine does not ferm any art of my present invention, and I have illustrated the two 'peeicatiun of Letters Patent.

Application filed J une 14, 1909.

CYLINDER LUBRICATION.

Patented May it?, Serial No. 502,152.

forms of engines simply to show that while the oil reservoir is placed on the under side of the cylinder, in the air feed engine, it .is necessary to. locate it on one side of the cylinder in the screw feed type of engine, as i the slideways 7 would prevent its being located upon the under side, as will be understood by reference to Fig. 6. In either form of drill, the improved oiling system is adapt ed to supply the lubricant. to the hammer piston, and parts operated thereby, and also to the valve chest, it being essential that all of t-hese operating parts of a rock drilling engine be kept well and evenly and automatica-lly lubricated. The invention is also applicableto all characters of air actuating presses, punches, and other direct aoting'engines.

My present invention consists in providing the cylinder of the drilling engine with an oil chamber 8, which is preferably cast in the shell of the cylinder, but which may be made separate therefrom if desired, and be attached thereto. I place this oil chamber along either the bottom or rear side of the cylinder, according to the style of drilling engine, and in the central portion thereof, and when the engine is in eitherl a hori zontal or inclined position, the piston will rest against the oil feeding apertures to he presently described, from which the eil feeds into the cylinder, as the piston will alwa s rest and bear with its Weight against tie bottom or rear side of the interior of thecylinderpin all positions in which it can be used except straight vertically up or down holes. This oil chamber is referably formed in the shell of castcylin ers by placing a. core in the mold 'when the cylinder is cast,` that will form the said chamber in the cast shell of the cylinder, and in order to support this core in the mold in theproper position to form this oil chamber, it is necessary to cast apertures in the outer shell of the cylinder that lead into the oil chamber, and 10G they are permanently closed after the cylind'er is cast by soft metal plugs E), of brass or other suitable metal. In the air feed engines, the oil chamber is provided with two oil and air feeding ports 10, which extend 105 from the oil chamber into the cylinder. These two portsare positioned at a short distance apart, and preferably at substain tially equal distances from the centerof the Sti length of the oil chamber, at which point a H0 lug or hub 11 is cast across the central portion of the oil chamber, and these oil and air ports are drilled through this hub portion from the outside of the shell of the cylinder, after which the entrances to these ports are plugged up with metal plu s 12. These air and oil ports are positione at a distance apart that vill permit the piston to make its reciprocal movements Without uncovering either or them, and they communicate with independent passages 13 and 14 respectively, which, are drilled into the opposite ends of the bottom Wall of the oil chamber until the ports 10 intersect, and the drilled entrances to these ports are closed up by plugs 15. The oil chamber is also provided With a lthreaded oil entrance aperture 16, which. is positioned at one end of the chamber, and which is closed after the chamber has been illed by ay threaded plug.

The operation of my improved method of oiling cylinders and pistons is as follows: The oil chamber is filled with oil, and when the piston is started iithe air 'pressure leaks by the piston into 't e oil and air ports and mingles with theoil until a space is made for itabove the oil by Athe feeding out of the oil into the cylinder. The little air that enters 'the oil chamber exerts pressure enough on the body oflthe oil to keepit feedingagainst the pist/on, which wipes it oli' as it reciprocates and turns in the cylinder, and thus lubricates its peripheral surface. The piston is provided With a smooth peripheral surface, and the oil. is fed therebyl around the cylinder by the reciprocal and rotative step by step movement otthe piston, and is carried to the various operatne parts, which dider in the various types and -styles of drillingengines. The oil is also carried by the force of the air through the cylinder ports 17 and 18, and intothe valve chest 19, so that the cylinder, iston and slide valve 20, and all o' the mova le parts of the mechanism are automatically and contii'irously lubricated. rilhe leakage ot' the air around the pistoniiito the air and oil ports is probably but a small fraction of the voltime of air in the cylinder, and this air when the oil chamber is completely full, enters both of `said ports. through the oil With which they are illed, and works to the up er portion of the chamber; then as 'the oil eeds out of the chamber a space is termed lfor the air above the oil, but not until the oil is lowered below the entrance of either one or the other of the feed. ports 13 or 14;, and depending on whether or not the drilling engine when in operation is pointing above or below a horizon tal .level in drilling upward or downward inclined holes in the breast of a tunnel, or in the stope, or is drillinfr down holes in a shaft. Consequently ivliilge it is not known positively Whether or not the air enters both at the same time through the outward oozing eeaeeo oil or selects either one or the other, which ever is uppermost relative to the position of the engine to a horizontal plane, it is known that it does enter and exerts a sli ht expelling or feedin pressure on the oi Ytor it a cylinder head e removed and the piston be moved to uncover the ports 10,'the oil will spurt out of both of them or out of one or the other, depending on the amount ol2 oil in the oil chamber part-way across the interior of the cylinder, showing that it is under air pressure. Furthermore the oil will not feed out of this oil Chambertin a satisfactory manner, and will not properly oil the piston and cylinder alone, much less the drill turning mechanism at its ends, when such mech aiiisin is employed, and the valve, if only one feeding port 1C is used. `In fact, during the early stages of the development ot this invention, l labored for a long time to make it feed oil satisfactorily with but one oil feeding inlet port into the cylinder from the oil chamber, and was about tc discard it when the idea came to me to try two feeding ports and `connect them to the opposite ends of the cylinder, as the one port when connected in that Way and in other numerous Ways would not Work.

My invention makes a most successful, thoroughly ractical, and automatically operating inet iod of oiling all of the interior Working parts of air operating rock-drilling engines, in particular, and of all air operating machinery lin general, which is even and .continuous in its application to the various parts ot the machine, and does not require a replenishing of the oil in the oil chamber but once ortvvice in a drill shift of eight to ten hours, depending on the consistency of the oil or other conditions.

Having described my invention, what l claim as new and desire to secure oy Letters latent, is: l

1. A. pneuniatically operating oilingmecif anisni 'for the cylinders and pistons of air operating engines, which consists of providing the cylinders of such `air operated. engines with an oil holding chamber, provided with a closable oil i'illing aperture, means including an air entering port extending from the inner peripheral Wa lotl said cylinder to one end portion of saidy oil chamber, and means including an oil outlet aperture extending from. the cppositeend portion of said oil chamber 'trom said other 'aperture to and l1 1 t 1 ,Y

tiiroiigii the shell ot said cylinder to its piston bore, said air inlet aperture being adapted to admit the air pressure of said cylinder to said oil chamber, and said oil outletfand air inlet apertures being positioned in the interior wall yofsaid cylinder to register at all times with the peripheral surface oi said piston in its operative reciprocal strokes` in said cylinder. o i i 2. 'A pneumatically operating. oiling ii'iecli anism 'for the. cylinders" and pistons of compressed air' operated ma'cl.inery,` which consiste of providin the cylindere` of such machinery with an oil holdin chamber provided with a closable oil ti ling entrance, and with a pair of ports positioned in Said cylinder at the central portion of the reelprocal portion of said'piston, and witlnn the limitsv of its movement, whereby said ports are covered by the peripheral surface of said piston, eaidports Aextending to said oil chamber and being adapted to permit the air pressure of said cylinder to flow into said oil chamber to force said'oil ont of said oil cliai'nber and said 'ports into Said eylinA der and in Contact with the peripheral surface of said piston.

3. in a 'pnenmaticaily operating oiling mechanism for Jhe cylinders and pistons and drill-bit rotating mechanism of air operating rock drilling engines, the combination of an oil chamber formed in the shell portions of rock drilling cylinders, `and arranged along the lower or piston bearing side of the central piston operating portion of said drilling engine, said oil chamber being provided with a4 closable oil filling aperture, and with two ports formed in the shell portion of said cylinder and chamber and arranged at a distance apart within the limit of the operative movement of tile pis- 'ton, and positioned in Said cylinder Where said chamber.

In testimony whereof I afiiX in vpreeenee of tivo Witnesees.

JOHN GEORGE LEYNER. lVi tnesseS JorlN A. FARWELL, ROBERT J. W AL'rMAN.

my signature 

